Journal of Animal Science and Technology

Korean Society of Animal Sciences and Technology (한국축산학회)
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Effects of Types of TMR on Rumen Fermentation Characteristics and Nutrients Digestibility in Sheep

유형별 완전혼합사료 급여가 반추위내의 발효성상 및 영양소 소화율에 미치는 영향

  • Li, D.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Ko, J.Y. (Nonghyup Feed INC.) ;
  • Choi, N.J. (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, Sang S. (School of Agricultural Biotechnology, Seoul National University) ;
  • Song, J.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Lee, S.Y. (School of Agricultural Biotechnology, Seoul National University) ;
  • Park, S.H. (School of Agricultural Biotechnology, Seoul National University) ;
  • Sung, H.G. (School of Agricultural Biotechnology, Seoul National University) ;
  • Ha, J.K. (School of Agricultural Biotechnology, Seoul National University)
  • Published : 2003.10.31
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Abstract

This study was conducted to examine effects of feeding dry TMR(DTMR), wet TMR(WTMR) and fermented TMR(FTMR) on rumen fermentation, enzyme activity and digestibility in the total tract of sheep. Three rumen cannulated sheep were used in a 3${\times}$3 latin square design. The present results showed that pH, NH3-N, total and individual VFA, A/P ratio and enzymes (CMCase, Xylanase and Protease) activity in the rumen were higher in WTMR and FTMR compared with DTMR. In addition, dry matter, organic matter, crude protein, ether extract, NDF and ADF digestibility in the total tract were also higher in WTMR and FTMR compared with DTMR. Therefore, the present results showed that WTMR and FTMR are better than DTMR for rumen fermentation and nutrients digestibility.

본 시험은 유형이 서로 다른 세 가지 형태의 TMR을 반추위에 누관이 장착된 면양을 이용하여 3${\times}$3 라틴 방각법으로 반추위내 발효성상, 효소역가 및 전장 소화율을 조사하였다. 시험 결과를 살펴보면, 전반적으로 반추위 내 pH, 암모니아태 질소 농도, 총 VFA, 각종 VFA생성량, A/P ratio 및 각종 효소(CMCase, Xylanase 및 Protease) 역가는 건TMR를 급여했을 때와 비교하여 습TMR과 발효TMR급여 시 높은 경향을 보였다. 또한 건물, 유기물, 조단백질, 조지방, NDF 및 ADF의 전장 소화율도 건TMR 급여 시 보다 습TMR과 발효TMR를 급여했을 때 높게 향상된 것을 볼 수 있다. 따라서 본 시험의 결과들을 종합해 보면 보다 안정적이고 활발한 반추위 발효과정과 영양소 이용효율 측면에서 건TMR보다 습TMR이나 발효TMR이 우수한 것으로 요약할 수 있다.

Keywords

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